.sider {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: 210px;
    background-color: #323745;
  }
  .sider .logo {
    display: block;
    height: 56px;
    background-color: #242732;
    overflow: hidden;
  }
  .sider .logo img {
    display: block;
    margin: 6px auto 0;
  }
  .user_info {
    height: 79px;
    border-bottom: 1px solid #5a5e6b;
  }
  
  .user_info img {
    float: left;
    width: 40px;
    height: 40px;
    border-radius: 20px;
    margin: 19px 0 0 30px;
  }
  .user_info span {
    float: left;
    width: 120px;
    font-size: 12px;
    color: #fff;
    margin: 23px 0 0 20px;
  }
  .user_info b {
    float: left;
    width: 120px;
    font-weight: normal;
    font-size: 12px;
    color: #adafb5;
    margin: 2px 0 0 20px;
  }
  
  .menu .level01 {
    height: 50px;
    line-height: 50px;
  }
  .menu .level01 a {
    display: block;
    height: 50px;
    font-size: 12px;
    color: #adafb5;
    overflow: hidden;
  }
  .menu .level01.active a {
    background-color: #1378f0;
    color: #fff;
  }
  .menu .level01.active i {
    color: #fff;
  }
  
  .menu .level01 a:hover {
    background-color: #1378f0;
    color: #fff;
  }
  .menu .level01 a:hover i {
    color: #fff;
  }
  .menu .level01 i {
    color: #61646f;
    font-size: 22px;
    float: left;
    margin-left: 26px;
  }
  .menu .level01 span {
    float: left;
    margin-left: 10px;
  }
  .menu .level01 b {
    float: right;
    margin-right: 20px;
    font-weight: normal;
    transform: rotate(-90deg);
    transition: all 500ms ease;
  }
  
  .menu .level01 .rotate0 {
    transform: rotate(0deg);
  }
  
  .menu .level02 {
    background: #242732;
    display: none;
  }
  
  .menu .level02 li {
    height: 40px;
    line-height: 40px;
  }
  .menu .level02 li a {
    display: block;
    height: 40px;
    font-size: 12px;
    color: #adafb5;
    overflow: hidden;
  }
  
  .menu .level02 li a:hover {
    background-color: #1378f0;
    color: #fff;
  }
  
  .menu .level02 li i {
    font-size: 12px;
    float: left;
    margin-left: 60px;
  }
  .menu .level02 li span {
    font-size: 12px;
    float: left;
    margin-left: 5px;
  }
  
  .menu .level02 .active a {
    color: #ffae00;
  }
  
  .header_bar {
    position: fixed;
    left: 210px;
    right: 0;
    top: 0;
    height: 56px;
    background-color: #fff;
  }
  
  .main {
    position: fixed;
    left: 210px;
    top: 56px;
    right: 0;
    bottom: 0;
    background-color: #f2f3f5;
  }
  
  .user_center_link {
    float: right;
  }
  .user_center_link a {
    line-height: 56px;
    font-size: 12px;
    color: #999;
    margin-right: 15px;
  }
  .user_center_link a:hover {
    color: #ffae00;
  }
  
  .user_center_link img {
    width: 42px;
    height: 42px;
    border-radius: 32px;
    margin-right: 10px;
  }